Add static declarations in Loader::library()
Add static declarations in Loader::library()

Add `static` declarations in `Loader::library()`

Not doing `element` do to this issue in themes

TimDix/concrete5,avdevs/concrete5,MichaelMaar/concrete5,avdevs/concrete5,matt9mg/concrete5,avdevs/concrete5,matt9mg/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,TimDix/concrete5,TimDix/concrete5,MichaelMaar/concrete5